Trump was unhappy to find out about the Pentagon chief’s controversial decision, which the president quickly reversed after a high-stakes meeting with Ukraine’s Volodymyr Zelenskyy.

Secretary of Defense Pete Hegseth did not inform the White House before he authorized a pause on weapons shipments to Ukraine last week, according to five sources familiar with the matter, setting off a scramble inside the administration to understand why the halt was implemented and explain it to Congress and the Ukrainian government.